Home / 558,432.81-837,649.35-390,281.58

Finding the Fourth Proportional to 558,432.81, 837,649.35 and 390,281.58

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Solution

The fourth proportional to 558,432.81, 837,649.35 and 390,281.58 is: 585,422.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,432.81 : 837,649.35 = 390,281.58 : x
  2. Step 2: Convert to fraction form
    558,432.81/837,649.35 = 390,281.58/x
  3. Step 3: Cross multiply
    558,432.81x = 837,649.35 × 390,281.58
  4. Step 4: Simplify right side
    558,432.81x = 326,919,111,803.97
  5. Step 5: Solve for x
    x = 326,919,111,803.97/558,432.81
  6. Step 6: Final answer
    x = 585,422.46

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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.