Home / 688,002.10-1,032,003.15-626,000.65

Finding the Fourth Proportional to 688,002.10, 1,032,003.15 and 626,000.65

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Solution

The fourth proportional to 688,002.10, 1,032,003.15 and 626,000.65 is: 939,000.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,002.10 : 1,032,003.15 = 626,000.65 : x
  2. Step 2: Convert to fraction form
    688,002.10/1,032,003.15 = 626,000.65/x
  3. Step 3: Cross multiply
    688,002.10x = 1,032,003.15 × 626,000.65
  4. Step 4: Simplify right side
    688,002.10x = 646,034,642,702.05
  5. Step 5: Solve for x
    x = 646,034,642,702.05/688,002.10
  6. Step 6: Final answer
    x = 939,000.98

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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.