Home / 713,823.52-985,104.04-391,547.20

Finding the Fourth Proportional to 713,823.52, 985,104.04 and 391,547.20

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Solution

The fourth proportional to 713,823.52, 985,104.04 and 391,547.20 is: 540,350.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,823.52 : 985,104.04 = 391,547.20 : x
  2. Step 2: Convert to fraction form
    713,823.52/985,104.04 = 391,547.20/x
  3. Step 3: Cross multiply
    713,823.52x = 985,104.04 × 391,547.20
  4. Step 4: Simplify right side
    713,823.52x = 385,714,728,570.69
  5. Step 5: Solve for x
    x = 385,714,728,570.69/713,823.52
  6. Step 6: Final answer
    x = 540,350.27

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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.