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Finding the Fourth Proportional to 564,534.12, 779,068.66 and 319,518.87

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Solution

The fourth proportional to 564,534.12, 779,068.66 and 319,518.87 is: 440,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,534.12 : 779,068.66 = 319,518.87 : x
  2. Step 2: Convert to fraction form
    564,534.12/779,068.66 = 319,518.87/x
  3. Step 3: Cross multiply
    564,534.12x = 779,068.66 × 319,518.87
  4. Step 4: Simplify right side
    564,534.12x = 248,927,141,815.62
  5. Step 5: Solve for x
    x = 248,927,141,815.62/564,534.12
  6. Step 6: Final answer
    x = 440,942.60

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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.