Home / 747,434.18-1,031,444.79-407,904.86

Finding the Fourth Proportional to 747,434.18, 1,031,444.79 and 407,904.86

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Solution

The fourth proportional to 747,434.18, 1,031,444.79 and 407,904.86 is: 562,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,434.18 : 1,031,444.79 = 407,904.86 : x
  2. Step 2: Convert to fraction form
    747,434.18/1,031,444.79 = 407,904.86/x
  3. Step 3: Cross multiply
    747,434.18x = 1,031,444.79 × 407,904.86
  4. Step 4: Simplify right side
    747,434.18x = 420,731,343,711.65
  5. Step 5: Solve for x
    x = 420,731,343,711.65/747,434.18
  6. Step 6: Final answer
    x = 562,900.86

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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.