Home / 931,386.60-1,395,911.22-398,280.76

Finding the Fourth Proportional to 931,386.60, 1,395,911.22 and 398,280.76

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Solution

The fourth proportional to 931,386.60, 1,395,911.22 and 398,280.76 is: 596,921.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,386.60 : 1,395,911.22 = 398,280.76 : x
  2. Step 2: Convert to fraction form
    931,386.60/1,395,911.22 = 398,280.76/x
  3. Step 3: Cross multiply
    931,386.60x = 1,395,911.22 × 398,280.76
  4. Step 4: Simplify right side
    931,386.60x = 555,964,581,594.13
  5. Step 5: Solve for x
    x = 555,964,581,594.13/931,386.60
  6. Step 6: Final answer
    x = 596,921.39

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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.