Home / 704,248-971,912.46-398,327.20

Finding the Fourth Proportional to 704,248, 971,912.46 and 398,327.20

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Solution

The fourth proportional to 704,248, 971,912.46 and 398,327.20 is: 549,719.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,248 : 971,912.46 = 398,327.20 : x
  2. Step 2: Convert to fraction form
    704,248/971,912.46 = 398,327.20/x
  3. Step 3: Cross multiply
    704,248x = 971,912.46 × 398,327.20
  4. Step 4: Simplify right side
    704,248x = 387,139,168,836.91
  5. Step 5: Solve for x
    x = 387,139,168,836.91/704,248
  6. Step 6: Final answer
    x = 549,719.94

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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.