Home / 792,420.71-1,187,579.61-431,666.08

Finding the Fourth Proportional to 792,420.71, 1,187,579.61 and 431,666.08

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Solution

The fourth proportional to 792,420.71, 1,187,579.61 and 431,666.08 is: 646,926.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,420.71 : 1,187,579.61 = 431,666.08 : x
  2. Step 2: Convert to fraction form
    792,420.71/1,187,579.61 = 431,666.08/x
  3. Step 3: Cross multiply
    792,420.71x = 1,187,579.61 × 431,666.08
  4. Step 4: Simplify right side
    792,420.71x = 512,637,831,967.68
  5. Step 5: Solve for x
    x = 512,637,831,967.68/792,420.71
  6. Step 6: Final answer
    x = 646,926.35

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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.