Home / 770,404.10-1,155,380.16-290,285.52

Finding the Fourth Proportional to 770,404.10, 1,155,380.16 and 290,285.52

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Solution

The fourth proportional to 770,404.10, 1,155,380.16 and 290,285.52 is: 435,343.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,404.10 : 1,155,380.16 = 290,285.52 : x
  2. Step 2: Convert to fraction form
    770,404.10/1,155,380.16 = 290,285.52/x
  3. Step 3: Cross multiply
    770,404.10x = 1,155,380.16 × 290,285.52
  4. Step 4: Simplify right side
    770,404.10x = 335,390,130,543.28
  5. Step 5: Solve for x
    x = 335,390,130,543.28/770,404.10
  6. Step 6: Final answer
    x = 435,343.13

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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.