Home / 867,112.61-1,298,985.66-638,994.15

Finding the Fourth Proportional to 867,112.61, 1,298,985.66 and 638,994.15

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Solution

The fourth proportional to 867,112.61, 1,298,985.66 and 638,994.15 is: 957,250.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,112.61 : 1,298,985.66 = 638,994.15 : x
  2. Step 2: Convert to fraction form
    867,112.61/1,298,985.66 = 638,994.15/x
  3. Step 3: Cross multiply
    867,112.61x = 1,298,985.66 × 638,994.15
  4. Step 4: Simplify right side
    867,112.61x = 830,044,237,673.89
  5. Step 5: Solve for x
    x = 830,044,237,673.89/867,112.61
  6. Step 6: Final answer
    x = 957,250.80

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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.