Home / 638,356.02-880,931.10-351,880.92

Finding the Fourth Proportional to 638,356.02, 880,931.10 and 351,880.92

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Solution

The fourth proportional to 638,356.02, 880,931.10 and 351,880.92 is: 485,595.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,356.02 : 880,931.10 = 351,880.92 : x
  2. Step 2: Convert to fraction form
    638,356.02/880,931.10 = 351,880.92/x
  3. Step 3: Cross multiply
    638,356.02x = 880,931.10 × 351,880.92
  4. Step 4: Simplify right side
    638,356.02x = 309,982,845,924.61
  5. Step 5: Solve for x
    x = 309,982,845,924.61/638,356.02
  6. Step 6: Final answer
    x = 485,595.56

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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.