Home / 977,638.90-1,349,139.89-547,918.92

Finding the Fourth Proportional to 977,638.90, 1,349,139.89 and 547,918.92

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Solution

The fourth proportional to 977,638.90, 1,349,139.89 and 547,918.92 is: 756,127.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,638.90 : 1,349,139.89 = 547,918.92 : x
  2. Step 2: Convert to fraction form
    977,638.90/1,349,139.89 = 547,918.92/x
  3. Step 3: Cross multiply
    977,638.90x = 1,349,139.89 × 547,918.92
  4. Step 4: Simplify right side
    977,638.90x = 739,219,271,457.72
  5. Step 5: Solve for x
    x = 739,219,271,457.72/977,638.90
  6. Step 6: Final answer
    x = 756,127.11

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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.