Home / 420,692,426.80-631,071,213.52-140,574,309.84

Finding the Fourth Proportional to 420,692,426.80, 631,071,213.52 and 140,574,309.84

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Solution

The fourth proportional to 420,692,426.80, 631,071,213.52 and 140,574,309.84 is: 210,872,349.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,692,426.80 : 631,071,213.52 = 140,574,309.84 : x
  2. Step 2: Convert to fraction form
    420,692,426.80/631,071,213.52 = 140,574,309.84/x
  3. Step 3: Cross multiply
    420,692,426.80x = 631,071,213.52 × 140,574,309.84
  4. Step 4: Simplify right side
    420,692,426.80x = 88,712,400,300,465,280
  5. Step 5: Solve for x
    x = 88,712,400,300,465,280/420,692,426.80
  6. Step 6: Final answer
    x = 210,872,349.13

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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.