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Finding the Fourth Proportional to 508,315.80, 761,598.90 and 330,731.40

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Solution

The fourth proportional to 508,315.80, 761,598.90 and 330,731.40 is: 495,527.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,315.80 : 761,598.90 = 330,731.40 : x
  2. Step 2: Convert to fraction form
    508,315.80/761,598.90 = 330,731.40/x
  3. Step 3: Cross multiply
    508,315.80x = 761,598.90 × 330,731.40
  4. Step 4: Simplify right side
    508,315.80x = 251,884,670,435.46
  5. Step 5: Solve for x
    x = 251,884,670,435.46/508,315.80
  6. Step 6: Final answer
    x = 495,527.92

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1.5x scale

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.