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Finding the Fourth Proportional to 572,186.60, 858,279.90 and 472,459.40

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Solution

The fourth proportional to 572,186.60, 858,279.90 and 472,459.40 is: 708,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,186.60 : 858,279.90 = 472,459.40 : x
  2. Step 2: Convert to fraction form
    572,186.60/858,279.90 = 472,459.40/x
  3. Step 3: Cross multiply
    572,186.60x = 858,279.90 × 472,459.40
  4. Step 4: Simplify right side
    572,186.60x = 405,502,406,586.06
  5. Step 5: Solve for x
    x = 405,502,406,586.06/572,186.60
  6. Step 6: Final answer
    x = 708,689.10

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Double scale
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Similar ratio
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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.