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Finding the Fourth Proportional to 612,549.47, 845,193.78 and 357,851.45

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Solution

The fourth proportional to 612,549.47, 845,193.78 and 357,851.45 is: 493,762.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,549.47 : 845,193.78 = 357,851.45 : x
  2. Step 2: Convert to fraction form
    612,549.47/845,193.78 = 357,851.45/x
  3. Step 3: Cross multiply
    612,549.47x = 845,193.78 × 357,851.45
  4. Step 4: Simplify right side
    612,549.47x = 302,453,815,801.74
  5. Step 5: Solve for x
    x = 302,453,815,801.74/612,549.47
  6. Step 6: Final answer
    x = 493,762.27

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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.