Home / 931,381.61-1,395,903.72-398,275.76

Finding the Fourth Proportional to 931,381.61, 1,395,903.72 and 398,275.76

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Solution

The fourth proportional to 931,381.61, 1,395,903.72 and 398,275.76 is: 596,913.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,381.61 : 1,395,903.72 = 398,275.76 : x
  2. Step 2: Convert to fraction form
    931,381.61/1,395,903.72 = 398,275.76/x
  3. Step 3: Cross multiply
    931,381.61x = 1,395,903.72 × 398,275.76
  4. Step 4: Simplify right side
    931,381.61x = 555,954,607,990.31
  5. Step 5: Solve for x
    x = 555,954,607,990.31/931,381.61
  6. Step 6: Final answer
    x = 596,913.88

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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.