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Finding the Fourth Proportional to 614,328.40, 847,841.88 and 342,421.12

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Solution

The fourth proportional to 614,328.40, 847,841.88 and 342,421.12 is: 472,579.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,328.40 : 847,841.88 = 342,421.12 : x
  2. Step 2: Convert to fraction form
    614,328.40/847,841.88 = 342,421.12/x
  3. Step 3: Cross multiply
    614,328.40x = 847,841.88 × 342,421.12
  4. Step 4: Simplify right side
    614,328.40x = 290,318,966,132.51
  5. Step 5: Solve for x
    x = 290,318,966,132.51/614,328.40
  6. Step 6: Final answer
    x = 472,579.43

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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.