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Finding the Fourth Proportional to 660,898.05, 912,036.12 and 374,417.46

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Solution

The fourth proportional to 660,898.05, 912,036.12 and 374,417.46 is: 516,694.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,898.05 : 912,036.12 = 374,417.46 : x
  2. Step 2: Convert to fraction form
    660,898.05/912,036.12 = 374,417.46/x
  3. Step 3: Cross multiply
    660,898.05x = 912,036.12 × 374,417.46
  4. Step 4: Simplify right side
    660,898.05x = 341,482,247,478.66
  5. Step 5: Solve for x
    x = 341,482,247,478.66/660,898.05
  6. Step 6: Final answer
    x = 516,694.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.