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Finding the Fourth Proportional to 495,955.80, 741,965.40 and 430,127.10

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Solution

The fourth proportional to 495,955.80, 741,965.40 and 430,127.10 is: 643,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,955.80 : 741,965.40 = 430,127.10 : x
  2. Step 2: Convert to fraction form
    495,955.80/741,965.40 = 430,127.10/x
  3. Step 3: Cross multiply
    495,955.80x = 741,965.40 × 430,127.10
  4. Step 4: Simplify right side
    495,955.80x = 319,139,425,802.34
  5. Step 5: Solve for x
    x = 319,139,425,802.34/495,955.80
  6. Step 6: Final answer
    x = 643,483.60

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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.