Home / 645,484.24-890,700.06-358,958.08

Finding the Fourth Proportional to 645,484.24, 890,700.06 and 358,958.08

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Solution

The fourth proportional to 645,484.24, 890,700.06 and 358,958.08 is: 495,324.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,484.24 : 890,700.06 = 358,958.08 : x
  2. Step 2: Convert to fraction form
    645,484.24/890,700.06 = 358,958.08/x
  3. Step 3: Cross multiply
    645,484.24x = 890,700.06 × 358,958.08
  4. Step 4: Simplify right side
    645,484.24x = 319,723,983,393.49
  5. Step 5: Solve for x
    x = 319,723,983,393.49/645,484.24
  6. Step 6: Final answer
    x = 495,324.23

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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.