Home / 645,313.02-890,495.38-358,826.95

Finding the Fourth Proportional to 645,313.02, 890,495.38 and 358,826.95

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Solution

The fourth proportional to 645,313.02, 890,495.38 and 358,826.95 is: 495,160.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,313.02 : 890,495.38 = 358,826.95 : x
  2. Step 2: Convert to fraction form
    645,313.02/890,495.38 = 358,826.95/x
  3. Step 3: Cross multiply
    645,313.02x = 890,495.38 × 358,826.95
  4. Step 4: Simplify right side
    645,313.02x = 319,533,741,194.49
  5. Step 5: Solve for x
    x = 319,533,741,194.49/645,313.02
  6. Step 6: Final answer
    x = 495,160.85

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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.