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Finding the Fourth Proportional to 660,624.72, 990,957.65 and 314,332.32

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Solution

The fourth proportional to 660,624.72, 990,957.65 and 314,332.32 is: 471,508.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,624.72 : 990,957.65 = 314,332.32 : x
  2. Step 2: Convert to fraction form
    660,624.72/990,957.65 = 314,332.32/x
  3. Step 3: Cross multiply
    660,624.72x = 990,957.65 × 314,332.32
  4. Step 4: Simplify right side
    660,624.72x = 311,490,019,290.68
  5. Step 5: Solve for x
    x = 311,490,019,290.68/660,624.72
  6. Step 6: Final answer
    x = 471,508.27

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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.