Home / 936,487,429.18-1,292,432,014.12-518,930,692.54

Finding the Fourth Proportional to 936,487,429.18, 1,292,432,014.12 and 518,930,692.54

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Solution

The fourth proportional to 936,487,429.18, 1,292,432,014.12 and 518,930,692.54 is: 716,168,332.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,487,429.18 : 1,292,432,014.12 = 518,930,692.54 : x
  2. Step 2: Convert to fraction form
    936,487,429.18/1,292,432,014.12 = 518,930,692.54/x
  3. Step 3: Cross multiply
    936,487,429.18x = 1,292,432,014.12 × 518,930,692.54
  4. Step 4: Simplify right side
    936,487,429.18x = 670,682,640,148,158,592
  5. Step 5: Solve for x
    x = 670,682,640,148,158,592/936,487,429.18
  6. Step 6: Final answer
    x = 716,168,332.06

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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.