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Finding the Fourth Proportional to 688,666.70, 1,033,000.05 and 478,714.70

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Solution

The fourth proportional to 688,666.70, 1,033,000.05 and 478,714.70 is: 718,072.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,666.70 : 1,033,000.05 = 478,714.70 : x
  2. Step 2: Convert to fraction form
    688,666.70/1,033,000.05 = 478,714.70/x
  3. Step 3: Cross multiply
    688,666.70x = 1,033,000.05 × 478,714.70
  4. Step 4: Simplify right side
    688,666.70x = 494,512,309,035.74
  5. Step 5: Solve for x
    x = 494,512,309,035.74/688,666.70
  6. Step 6: Final answer
    x = 718,072.05

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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.