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Finding the Fourth Proportional to 572,486.40, 858,729.60 and 198,547.20

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Solution

The fourth proportional to 572,486.40, 858,729.60 and 198,547.20 is: 297,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,486.40 : 858,729.60 = 198,547.20 : x
  2. Step 2: Convert to fraction form
    572,486.40/858,729.60 = 198,547.20/x
  3. Step 3: Cross multiply
    572,486.40x = 858,729.60 × 198,547.20
  4. Step 4: Simplify right side
    572,486.40x = 170,498,357,637.12
  5. Step 5: Solve for x
    x = 170,498,357,637.12/572,486.40
  6. Step 6: Final answer
    x = 297,820.80

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Similar ratio
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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.