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Finding the Fourth Proportional to 660,280.40, 912,041.69 and 546,020.58

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Solution

The fourth proportional to 660,280.40, 912,041.69 and 546,020.58 is: 754,215.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,280.40 : 912,041.69 = 546,020.58 : x
  2. Step 2: Convert to fraction form
    660,280.40/912,041.69 = 546,020.58/x
  3. Step 3: Cross multiply
    660,280.40x = 912,041.69 × 546,020.58
  4. Step 4: Simplify right side
    660,280.40x = 497,993,529,827.88
  5. Step 5: Solve for x
    x = 497,993,529,827.88/660,280.40
  6. Step 6: Final answer
    x = 754,215.23

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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.