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Finding the Fourth Proportional to 564,131.68, 778,455.02 and 309,482.87

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Solution

The fourth proportional to 564,131.68, 778,455.02 and 309,482.87 is: 427,060.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,131.68 : 778,455.02 = 309,482.87 : x
  2. Step 2: Convert to fraction form
    564,131.68/778,455.02 = 309,482.87/x
  3. Step 3: Cross multiply
    564,131.68x = 778,455.02 × 309,482.87
  4. Step 4: Simplify right side
    564,131.68x = 240,918,490,636.94
  5. Step 5: Solve for x
    x = 240,918,490,636.94/564,131.68
  6. Step 6: Final answer
    x = 427,060.74

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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.