Home / 817,312.02-1,225,969.02-390,747.54

Finding the Fourth Proportional to 817,312.02, 1,225,969.02 and 390,747.54

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Solution

The fourth proportional to 817,312.02, 1,225,969.02 and 390,747.54 is: 586,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,312.02 : 1,225,969.02 = 390,747.54 : x
  2. Step 2: Convert to fraction form
    817,312.02/1,225,969.02 = 390,747.54/x
  3. Step 3: Cross multiply
    817,312.02x = 1,225,969.02 × 390,747.54
  4. Step 4: Simplify right side
    817,312.02x = 479,044,383,278.60
  5. Step 5: Solve for x
    x = 479,044,383,278.60/817,312.02
  6. Step 6: Final answer
    x = 586,121.79

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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.