Home / 1,122,328.80-1,681,646.40-648,187.20

Finding the Fourth Proportional to 1,122,328.80, 1,681,646.40 and 648,187.20

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Solution

The fourth proportional to 1,122,328.80, 1,681,646.40 and 648,187.20 is: 971,214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,328.80 : 1,681,646.40 = 648,187.20 : x
  2. Step 2: Convert to fraction form
    1,122,328.80/1,681,646.40 = 648,187.20/x
  3. Step 3: Cross multiply
    1,122,328.80x = 1,681,646.40 × 648,187.20
  4. Step 4: Simplify right side
    1,122,328.80x = 1,090,021,671,406.08
  5. Step 5: Solve for x
    x = 1,090,021,671,406.08/1,122,328.80
  6. Step 6: Final answer
    x = 971,214.20

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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.