Home / 761,931.90-1,142,817.66-312,700.23

Finding the Fourth Proportional to 761,931.90, 1,142,817.66 and 312,700.23

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Solution

The fourth proportional to 761,931.90, 1,142,817.66 and 312,700.23 is: 469,017.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,931.90 : 1,142,817.66 = 312,700.23 : x
  2. Step 2: Convert to fraction form
    761,931.90/1,142,817.66 = 312,700.23/x
  3. Step 3: Cross multiply
    761,931.90x = 1,142,817.66 × 312,700.23
  4. Step 4: Simplify right side
    761,931.90x = 357,359,345,130.06
  5. Step 5: Solve for x
    x = 357,359,345,130.06/761,931.90
  6. Step 6: Final answer
    x = 469,017.43

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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.