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Finding the Fourth Proportional to 564,980.01, 779,482.35 and 319,931.25

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Solution

The fourth proportional to 564,980.01, 779,482.35 and 319,931.25 is: 441,397.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,980.01 : 779,482.35 = 319,931.25 : x
  2. Step 2: Convert to fraction form
    564,980.01/779,482.35 = 319,931.25/x
  3. Step 3: Cross multiply
    564,980.01x = 779,482.35 × 319,931.25
  4. Step 4: Simplify right side
    564,980.01x = 249,380,762,588.44
  5. Step 5: Solve for x
    x = 249,380,762,588.44/564,980.01
  6. Step 6: Final answer
    x = 441,397.50

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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.