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Finding the Fourth Proportional to 648,482.18, 973,316.54 and 328,854.65

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Solution

The fourth proportional to 648,482.18, 973,316.54 and 328,854.65 is: 493,582.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,482.18 : 973,316.54 = 328,854.65 : x
  2. Step 2: Convert to fraction form
    648,482.18/973,316.54 = 328,854.65/x
  3. Step 3: Cross multiply
    648,482.18x = 973,316.54 × 328,854.65
  4. Step 4: Simplify right side
    648,482.18x = 320,079,666,056.47
  5. Step 5: Solve for x
    x = 320,079,666,056.47/648,482.18
  6. Step 6: Final answer
    x = 493,582.83

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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.