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Finding the Fourth Proportional to 648,730.40, 973,095.60 and 470,400.80

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Solution

The fourth proportional to 648,730.40, 973,095.60 and 470,400.80 is: 705,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,730.40 : 973,095.60 = 470,400.80 : x
  2. Step 2: Convert to fraction form
    648,730.40/973,095.60 = 470,400.80/x
  3. Step 3: Cross multiply
    648,730.40x = 973,095.60 × 470,400.80
  4. Step 4: Simplify right side
    648,730.40x = 457,744,948,716.48
  5. Step 5: Solve for x
    x = 457,744,948,716.48/648,730.40
  6. Step 6: Final answer
    x = 705,601.20

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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.