Home / 740,312.52-1,021,634.58-400,780.74

Finding the Fourth Proportional to 740,312.52, 1,021,634.58 and 400,780.74

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Solution

The fourth proportional to 740,312.52, 1,021,634.58 and 400,780.74 is: 553,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,312.52 : 1,021,634.58 = 400,780.74 : x
  2. Step 2: Convert to fraction form
    740,312.52/1,021,634.58 = 400,780.74/x
  3. Step 3: Cross multiply
    740,312.52x = 1,021,634.58 × 400,780.74
  4. Step 4: Simplify right side
    740,312.52x = 409,451,462,981.99
  5. Step 5: Solve for x
    x = 409,451,462,981.99/740,312.52
  6. Step 6: Final answer
    x = 553,079.21

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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.