Home / 642,298.17-886,465.86-370,312.80

Finding the Fourth Proportional to 642,298.17, 886,465.86 and 370,312.80

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Solution

The fourth proportional to 642,298.17, 886,465.86 and 370,312.80 is: 511,086.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,298.17 : 886,465.86 = 370,312.80 : x
  2. Step 2: Convert to fraction form
    642,298.17/886,465.86 = 370,312.80/x
  3. Step 3: Cross multiply
    642,298.17x = 886,465.86 × 370,312.80
  4. Step 4: Simplify right side
    642,298.17x = 328,269,654,721.01
  5. Step 5: Solve for x
    x = 328,269,654,721.01/642,298.17
  6. Step 6: Final answer
    x = 511,086.08

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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.