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Finding the Fourth Proportional to 564,774.80, 779,338.44 and 310,120.40

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Solution

The fourth proportional to 564,774.80, 779,338.44 and 310,120.40 is: 427,938.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,774.80 : 779,338.44 = 310,120.40 : x
  2. Step 2: Convert to fraction form
    564,774.80/779,338.44 = 310,120.40/x
  3. Step 3: Cross multiply
    564,774.80x = 779,338.44 × 310,120.40
  4. Step 4: Simplify right side
    564,774.80x = 241,688,748,748.18
  5. Step 5: Solve for x
    x = 241,688,748,748.18/564,774.80
  6. Step 6: Final answer
    x = 427,938.27

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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.