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Finding the Fourth Proportional to 611,345.70, 917,018.55 and 471,377.70

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Solution

The fourth proportional to 611,345.70, 917,018.55 and 471,377.70 is: 707,066.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,345.70 : 917,018.55 = 471,377.70 : x
  2. Step 2: Convert to fraction form
    611,345.70/917,018.55 = 471,377.70/x
  3. Step 3: Cross multiply
    611,345.70x = 917,018.55 × 471,377.70
  4. Step 4: Simplify right side
    611,345.70x = 432,262,094,956.34
  5. Step 5: Solve for x
    x = 432,262,094,956.34/611,345.70
  6. Step 6: Final answer
    x = 707,066.55

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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.