Home / 645,441.57-890,774.69-369,835.92

Finding the Fourth Proportional to 645,441.57, 890,774.69 and 369,835.92

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Solution

The fourth proportional to 645,441.57, 890,774.69 and 369,835.92 is: 510,411.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,441.57 : 890,774.69 = 369,835.92 : x
  2. Step 2: Convert to fraction form
    645,441.57/890,774.69 = 369,835.92/x
  3. Step 3: Cross multiply
    645,441.57x = 890,774.69 × 369,835.92
  4. Step 4: Simplify right side
    645,441.57x = 329,440,475,139.69
  5. Step 5: Solve for x
    x = 329,440,475,139.69/645,441.57
  6. Step 6: Final answer
    x = 510,411.00

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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.