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Finding the Fourth Proportional to 608,315,266.40, 912,472,899.60 and 572,483,458.40

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Solution

The fourth proportional to 608,315,266.40, 912,472,899.60 and 572,483,458.40 is: 858,725,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,315,266.40 : 912,472,899.60 = 572,483,458.40 : x
  2. Step 2: Convert to fraction form
    608,315,266.40/912,472,899.60 = 572,483,458.40/x
  3. Step 3: Cross multiply
    608,315,266.40x = 912,472,899.60 × 572,483,458.40
  4. Step 4: Simplify right side
    608,315,266.40x = 522,375,641,259,283,968
  5. Step 5: Solve for x
    x = 522,375,641,259,283,968/608,315,266.40
  6. Step 6: Final answer
    x = 858,725,187.60

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Double scale
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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.