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Finding the Fourth Proportional to 706,712.70, 1,057,477.05 and 520,088.70

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Solution

The fourth proportional to 706,712.70, 1,057,477.05 and 520,088.70 is: 778,225.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,712.70 : 1,057,477.05 = 520,088.70 : x
  2. Step 2: Convert to fraction form
    706,712.70/1,057,477.05 = 520,088.70/x
  3. Step 3: Cross multiply
    706,712.70x = 1,057,477.05 × 520,088.70
  4. Step 4: Simplify right side
    706,712.70x = 549,981,864,214.34
  5. Step 5: Solve for x
    x = 549,981,864,214.34/706,712.70
  6. Step 6: Final answer
    x = 778,225.53

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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.