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Finding the Fourth Proportional to 546,075.90, 819,113.85 and 386,643.60

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Solution

The fourth proportional to 546,075.90, 819,113.85 and 386,643.60 is: 579,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,075.90 : 819,113.85 = 386,643.60 : x
  2. Step 2: Convert to fraction form
    546,075.90/819,113.85 = 386,643.60/x
  3. Step 3: Cross multiply
    546,075.90x = 819,113.85 × 386,643.60
  4. Step 4: Simplify right side
    546,075.90x = 316,705,127,773.86
  5. Step 5: Solve for x
    x = 316,705,127,773.86/546,075.90
  6. Step 6: Final answer
    x = 579,965.40

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.