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Finding the Fourth Proportional to 555,195.79, 767,461.40 and 495,359.47

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Solution

The fourth proportional to 555,195.79, 767,461.40 and 495,359.47 is: 684,748.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,195.79 : 767,461.40 = 495,359.47 : x
  2. Step 2: Convert to fraction form
    555,195.79/767,461.40 = 495,359.47/x
  3. Step 3: Cross multiply
    555,195.79x = 767,461.40 × 495,359.47
  4. Step 4: Simplify right side
    555,195.79x = 380,169,272,349.46
  5. Step 5: Solve for x
    x = 380,169,272,349.46/555,195.79
  6. Step 6: Final answer
    x = 684,748.12

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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.