Home / 768,643.20-1,060,628.16-429,125.76

Finding the Fourth Proportional to 768,643.20, 1,060,628.16 and 429,125.76

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Solution

The fourth proportional to 768,643.20, 1,060,628.16 and 429,125.76 is: 592,138.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,643.20 : 1,060,628.16 = 429,125.76 : x
  2. Step 2: Convert to fraction form
    768,643.20/1,060,628.16 = 429,125.76/x
  3. Step 3: Cross multiply
    768,643.20x = 1,060,628.16 × 429,125.76
  4. Step 4: Simplify right side
    768,643.20x = 455,142,865,237.40
  5. Step 5: Solve for x
    x = 455,142,865,237.40/768,643.20
  6. Step 6: Final answer
    x = 592,138.02

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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.