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Finding the Fourth Proportional to 612,613.64, 845,282.94 and 357,915.62

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Solution

The fourth proportional to 612,613.64, 845,282.94 and 357,915.62 is: 493,851.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,613.64 : 845,282.94 = 357,915.62 : x
  2. Step 2: Convert to fraction form
    612,613.64/845,282.94 = 357,915.62/x
  3. Step 3: Cross multiply
    612,613.64x = 845,282.94 × 357,915.62
  4. Step 4: Simplify right side
    612,613.64x = 302,539,967,545.52
  5. Step 5: Solve for x
    x = 302,539,967,545.52/612,613.64
  6. Step 6: Final answer
    x = 493,851.18

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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.