Home / 688,432.80-1,032,649.20-618,448.80

Finding the Fourth Proportional to 688,432.80, 1,032,649.20 and 618,448.80

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Solution

The fourth proportional to 688,432.80, 1,032,649.20 and 618,448.80 is: 927,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,432.80 : 1,032,649.20 = 618,448.80 : x
  2. Step 2: Convert to fraction form
    688,432.80/1,032,649.20 = 618,448.80/x
  3. Step 3: Cross multiply
    688,432.80x = 1,032,649.20 × 618,448.80
  4. Step 4: Simplify right side
    688,432.80x = 638,640,658,560.96
  5. Step 5: Solve for x
    x = 638,640,658,560.96/688,432.80
  6. Step 6: Final answer
    x = 927,673.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.