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Finding the Fourth Proportional to 978,320.09, 1,350,275.34 and 634,582.01

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Solution

The fourth proportional to 978,320.09, 1,350,275.34 and 634,582.01 is: 875,848.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,320.09 : 1,350,275.34 = 634,582.01 : x
  2. Step 2: Convert to fraction form
    978,320.09/1,350,275.34 = 634,582.01/x
  3. Step 3: Cross multiply
    978,320.09x = 1,350,275.34 × 634,582.01
  4. Step 4: Simplify right side
    978,320.09x = 856,860,439,310.63
  5. Step 5: Solve for x
    x = 856,860,439,310.63/978,320.09
  6. Step 6: Final answer
    x = 875,848.76

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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.