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Finding the Fourth Proportional to 612,110.80, 915,574.20 and 549,384.40

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Solution

The fourth proportional to 612,110.80, 915,574.20 and 549,384.40 is: 821,750.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,110.80 : 915,574.20 = 549,384.40 : x
  2. Step 2: Convert to fraction form
    612,110.80/915,574.20 = 549,384.40/x
  3. Step 3: Cross multiply
    612,110.80x = 915,574.20 × 549,384.40
  4. Step 4: Simplify right side
    612,110.80x = 503,002,182,522.48
  5. Step 5: Solve for x
    x = 503,002,182,522.48/612,110.80
  6. Step 6: Final answer
    x = 821,750.22

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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.