Home / 645,332.40-890,580.34-354,956.24

Finding the Fourth Proportional to 645,332.40, 890,580.34 and 354,956.24

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Solution

The fourth proportional to 645,332.40, 890,580.34 and 354,956.24 is: 489,851.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,332.40 : 890,580.34 = 354,956.24 : x
  2. Step 2: Convert to fraction form
    645,332.40/890,580.34 = 354,956.24/x
  3. Step 3: Cross multiply
    645,332.40x = 890,580.34 × 354,956.24
  4. Step 4: Simplify right side
    645,332.40x = 316,117,048,904.32
  5. Step 5: Solve for x
    x = 316,117,048,904.32/645,332.40
  6. Step 6: Final answer
    x = 489,851.51

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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.