Home / 936,487,428.18-1,292,432,012.74-518,930,691.54

Finding the Fourth Proportional to 936,487,428.18, 1,292,432,012.74 and 518,930,691.54

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Solution

The fourth proportional to 936,487,428.18, 1,292,432,012.74 and 518,930,691.54 is: 716,168,330.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,487,428.18 : 1,292,432,012.74 = 518,930,691.54 : x
  2. Step 2: Convert to fraction form
    936,487,428.18/1,292,432,012.74 = 518,930,691.54/x
  3. Step 3: Cross multiply
    936,487,428.18x = 1,292,432,012.74 × 518,930,691.54
  4. Step 4: Simplify right side
    936,487,428.18x = 670,682,638,139,602,304
  5. Step 5: Solve for x
    x = 670,682,638,139,602,304/936,487,428.18
  6. Step 6: Final answer
    x = 716,168,330.68

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Double scale
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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.