Home / 672,124.40-1,008,478.20-339,700.40

Finding the Fourth Proportional to 672,124.40, 1,008,478.20 and 339,700.40

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Solution

The fourth proportional to 672,124.40, 1,008,478.20 and 339,700.40 is: 509,697.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,124.40 : 1,008,478.20 = 339,700.40 : x
  2. Step 2: Convert to fraction form
    672,124.40/1,008,478.20 = 339,700.40/x
  3. Step 3: Cross multiply
    672,124.40x = 1,008,478.20 × 339,700.40
  4. Step 4: Simplify right side
    672,124.40x = 342,580,447,931.28
  5. Step 5: Solve for x
    x = 342,580,447,931.28/672,124.40
  6. Step 6: Final answer
    x = 509,697.98

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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.