Home / 579,416.30-869,124.45-509,374.70

Finding the Fourth Proportional to 579,416.30, 869,124.45 and 509,374.70

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Solution

The fourth proportional to 579,416.30, 869,124.45 and 509,374.70 is: 764,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,416.30 : 869,124.45 = 509,374.70 : x
  2. Step 2: Convert to fraction form
    579,416.30/869,124.45 = 509,374.70/x
  3. Step 3: Cross multiply
    579,416.30x = 869,124.45 × 509,374.70
  4. Step 4: Simplify right side
    579,416.30x = 442,710,005,981.42
  5. Step 5: Solve for x
    x = 442,710,005,981.42/579,416.30
  6. Step 6: Final answer
    x = 764,062.05

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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.