Home / 645,338.20-890,567.46-358,852.12

Finding the Fourth Proportional to 645,338.20, 890,567.46 and 358,852.12

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Solution

The fourth proportional to 645,338.20, 890,567.46 and 358,852.12 is: 495,216.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,338.20 : 890,567.46 = 358,852.12 : x
  2. Step 2: Convert to fraction form
    645,338.20/890,567.46 = 358,852.12/x
  3. Step 3: Cross multiply
    645,338.20x = 890,567.46 × 358,852.12
  4. Step 4: Simplify right side
    645,338.20x = 319,582,021,024.02
  5. Step 5: Solve for x
    x = 319,582,021,024.02/645,338.20
  6. Step 6: Final answer
    x = 495,216.34

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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.