Home / 645,312.02-890,494.00-358,825.95

Finding the Fourth Proportional to 645,312.02, 890,494.00 and 358,825.95

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Solution

The fourth proportional to 645,312.02, 890,494.00 and 358,825.95 is: 495,159.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,312.02 : 890,494.00 = 358,825.95 : x
  2. Step 2: Convert to fraction form
    645,312.02/890,494.00 = 358,825.95/x
  3. Step 3: Cross multiply
    645,312.02x = 890,494.00 × 358,825.95
  4. Step 4: Simplify right side
    645,312.02x = 319,532,356,640.63
  5. Step 5: Solve for x
    x = 319,532,356,640.63/645,312.02
  6. Step 6: Final answer
    x = 495,159.47

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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.