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Finding the Fourth Proportional to 564,779.58, 779,396.76 and 310,146.90

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Solution

The fourth proportional to 564,779.58, 779,396.76 and 310,146.90 is: 428,003.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,779.58 : 779,396.76 = 310,146.90 : x
  2. Step 2: Convert to fraction form
    564,779.58/779,396.76 = 310,146.90/x
  3. Step 3: Cross multiply
    564,779.58x = 779,396.76 × 310,146.90
  4. Step 4: Simplify right side
    564,779.58x = 241,727,488,984.04
  5. Step 5: Solve for x
    x = 241,727,488,984.04/564,779.58
  6. Step 6: Final answer
    x = 428,003.24

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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.