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Finding the Fourth Proportional to 564,340.16, 778,798.92 and 309,715.04

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Solution

The fourth proportional to 564,340.16, 778,798.92 and 309,715.04 is: 427,411.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,340.16 : 778,798.92 = 309,715.04 : x
  2. Step 2: Convert to fraction form
    564,340.16/778,798.92 = 309,715.04/x
  3. Step 3: Cross multiply
    564,340.16x = 778,798.92 × 309,715.04
  4. Step 4: Simplify right side
    564,340.16x = 241,205,738,659.76
  5. Step 5: Solve for x
    x = 241,205,738,659.76/564,340.16
  6. Step 6: Final answer
    x = 427,411.97

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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.