Home / 862,280.79-1,189,984.19-480,307.74

Finding the Fourth Proportional to 862,280.79, 1,189,984.19 and 480,307.74

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Solution

The fourth proportional to 862,280.79, 1,189,984.19 and 480,307.74 is: 662,845.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,280.79 : 1,189,984.19 = 480,307.74 : x
  2. Step 2: Convert to fraction form
    862,280.79/1,189,984.19 = 480,307.74/x
  3. Step 3: Cross multiply
    862,280.79x = 1,189,984.19 × 480,307.74
  4. Step 4: Simplify right side
    862,280.79x = 571,558,616,934.63
  5. Step 5: Solve for x
    x = 571,558,616,934.63/862,280.79
  6. Step 6: Final answer
    x = 662,845.12

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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.