Home / 1,121,421.88-1,547,548.60-637,985.92

Finding the Fourth Proportional to 1,121,421.88, 1,547,548.60 and 637,985.92

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Solution

The fourth proportional to 1,121,421.88, 1,547,548.60 and 637,985.92 is: 880,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,421.88 : 1,547,548.60 = 637,985.92 : x
  2. Step 2: Convert to fraction form
    1,121,421.88/1,547,548.60 = 637,985.92/x
  3. Step 3: Cross multiply
    1,121,421.88x = 1,547,548.60 × 637,985.92
  4. Step 4: Simplify right side
    1,121,421.88x = 987,314,217,315.71
  5. Step 5: Solve for x
    x = 987,314,217,315.71/1,121,421.88
  6. Step 6: Final answer
    x = 880,412.84

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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.