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Finding the Fourth Proportional to 708,937.32, 977,995.83 and 479,574.90

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Solution

The fourth proportional to 708,937.32, 977,995.83 and 479,574.90 is: 661,584.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,937.32 : 977,995.83 = 479,574.90 : x
  2. Step 2: Convert to fraction form
    708,937.32/977,995.83 = 479,574.90/x
  3. Step 3: Cross multiply
    708,937.32x = 977,995.83 × 479,574.90
  4. Step 4: Simplify right side
    708,937.32x = 469,022,252,372.67
  5. Step 5: Solve for x
    x = 469,022,252,372.67/708,937.32
  6. Step 6: Final answer
    x = 661,584.94

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1.5x scale

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.