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Finding the Fourth Proportional to 648,806.40, 973,209.60 and 470,476.80

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Solution

The fourth proportional to 648,806.40, 973,209.60 and 470,476.80 is: 705,715.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,806.40 : 973,209.60 = 470,476.80 : x
  2. Step 2: Convert to fraction form
    648,806.40/973,209.60 = 470,476.80/x
  3. Step 3: Cross multiply
    648,806.40x = 973,209.60 × 470,476.80
  4. Step 4: Simplify right side
    648,806.40x = 457,872,538,337.28
  5. Step 5: Solve for x
    x = 457,872,538,337.28/648,806.40
  6. Step 6: Final answer
    x = 705,715.20

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.