Home / 936,487,430.55-1,292,432,016.02-518,930,693.91

Finding the Fourth Proportional to 936,487,430.55, 1,292,432,016.02 and 518,930,693.91

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Solution

The fourth proportional to 936,487,430.55, 1,292,432,016.02 and 518,930,693.91 is: 716,168,333.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,487,430.55 : 1,292,432,016.02 = 518,930,693.91 : x
  2. Step 2: Convert to fraction form
    936,487,430.55/1,292,432,016.02 = 518,930,693.91/x
  3. Step 3: Cross multiply
    936,487,430.55x = 1,292,432,016.02 × 518,930,693.91
  4. Step 4: Simplify right side
    936,487,430.55x = 670,682,642,902,164,224
  5. Step 5: Solve for x
    x = 670,682,642,902,164,224/936,487,430.55
  6. Step 6: Final answer
    x = 716,168,333.95

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Double scale
Find fourth proportional to 936,487,431.55, 1,292,432,017.40 and 518,930,694.91
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.