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Finding the Fourth Proportional to 647,904.80, 971,857.20 and 310,888.10

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Solution

The fourth proportional to 647,904.80, 971,857.20 and 310,888.10 is: 466,332.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,904.80 : 971,857.20 = 310,888.10 : x
  2. Step 2: Convert to fraction form
    647,904.80/971,857.20 = 310,888.10/x
  3. Step 3: Cross multiply
    647,904.80x = 971,857.20 × 310,888.10
  4. Step 4: Simplify right side
    647,904.80x = 302,138,838,379.32
  5. Step 5: Solve for x
    x = 302,138,838,379.32/647,904.80
  6. Step 6: Final answer
    x = 466,332.15

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Similar ratio
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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.