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Finding the Fourth Proportional to 707,927.04, 977,039.28 and 402,079.68

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Solution

The fourth proportional to 707,927.04, 977,039.28 and 402,079.68 is: 554,926.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,927.04 : 977,039.28 = 402,079.68 : x
  2. Step 2: Convert to fraction form
    707,927.04/977,039.28 = 402,079.68/x
  3. Step 3: Cross multiply
    707,927.04x = 977,039.28 × 402,079.68
  4. Step 4: Simplify right side
    707,927.04x = 392,847,641,049.83
  5. Step 5: Solve for x
    x = 392,847,641,049.83/707,927.04
  6. Step 6: Final answer
    x = 554,926.74

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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.