Home / 712,985.60-1,069,640.40-239,718.80

Finding the Fourth Proportional to 712,985.60, 1,069,640.40 and 239,718.80

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Solution

The fourth proportional to 712,985.60, 1,069,640.40 and 239,718.80 is: 359,632.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,985.60 : 1,069,640.40 = 239,718.80 : x
  2. Step 2: Convert to fraction form
    712,985.60/1,069,640.40 = 239,718.80/x
  3. Step 3: Cross multiply
    712,985.60x = 1,069,640.40 × 239,718.80
  4. Step 4: Simplify right side
    712,985.60x = 256,412,913,119.52
  5. Step 5: Solve for x
    x = 256,412,913,119.52/712,985.60
  6. Step 6: Final answer
    x = 359,632.67

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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.