Home / 719,475.12-992,870.10-397,185.66

Finding the Fourth Proportional to 719,475.12, 992,870.10 and 397,185.66

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Solution

The fourth proportional to 719,475.12, 992,870.10 and 397,185.66 is: 548,113.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,475.12 : 992,870.10 = 397,185.66 : x
  2. Step 2: Convert to fraction form
    719,475.12/992,870.10 = 397,185.66/x
  3. Step 3: Cross multiply
    719,475.12x = 992,870.10 × 397,185.66
  4. Step 4: Simplify right side
    719,475.12x = 394,353,765,962.77
  5. Step 5: Solve for x
    x = 394,353,765,962.77/719,475.12
  6. Step 6: Final answer
    x = 548,113.14

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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.