Home / 716,374.04-988,575.60-389,676.76

Finding the Fourth Proportional to 716,374.04, 988,575.60 and 389,676.76

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Solution

The fourth proportional to 716,374.04, 988,575.60 and 389,676.76 is: 537,742.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,374.04 : 988,575.60 = 389,676.76 : x
  2. Step 2: Convert to fraction form
    716,374.04/988,575.60 = 389,676.76/x
  3. Step 3: Cross multiply
    716,374.04x = 988,575.60 × 389,676.76
  4. Step 4: Simplify right side
    716,374.04x = 385,224,936,823.06
  5. Step 5: Solve for x
    x = 385,224,936,823.06/716,374.04
  6. Step 6: Final answer
    x = 537,742.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.