Home / 905,492.90-1,249,307.70-542,784.42

Finding the Fourth Proportional to 905,492.90, 1,249,307.70 and 542,784.42

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Solution

The fourth proportional to 905,492.90, 1,249,307.70 and 542,784.42 is: 748,879.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,492.90 : 1,249,307.70 = 542,784.42 : x
  2. Step 2: Convert to fraction form
    905,492.90/1,249,307.70 = 542,784.42/x
  3. Step 3: Cross multiply
    905,492.90x = 1,249,307.70 × 542,784.42
  4. Step 4: Simplify right side
    905,492.90x = 678,104,755,346.03
  5. Step 5: Solve for x
    x = 678,104,755,346.03/905,492.90
  6. Step 6: Final answer
    x = 748,879.15

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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.