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Finding the Fourth Proportional to 554,445.30, 830,501.55 and 461,133.30

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Solution

The fourth proportional to 554,445.30, 830,501.55 and 461,133.30 is: 690,729.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,445.30 : 830,501.55 = 461,133.30 : x
  2. Step 2: Convert to fraction form
    554,445.30/830,501.55 = 461,133.30/x
  3. Step 3: Cross multiply
    554,445.30x = 830,501.55 × 461,133.30
  4. Step 4: Simplify right side
    554,445.30x = 382,971,920,406.62
  5. Step 5: Solve for x
    x = 382,971,920,406.62/554,445.30
  6. Step 6: Final answer
    x = 690,729.85

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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.