Home / 1,064,620.80-1,596,931.20-987,638.40

Finding the Fourth Proportional to 1,064,620.80, 1,596,931.20 and 987,638.40

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Solution

The fourth proportional to 1,064,620.80, 1,596,931.20 and 987,638.40 is: 1,481,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064,620.80 : 1,596,931.20 = 987,638.40 : x
  2. Step 2: Convert to fraction form
    1,064,620.80/1,596,931.20 = 987,638.40/x
  3. Step 3: Cross multiply
    1,064,620.80x = 1,596,931.20 × 987,638.40
  4. Step 4: Simplify right side
    1,064,620.80x = 1,577,190,575,278.08
  5. Step 5: Solve for x
    x = 1,577,190,575,278.08/1,064,620.80
  6. Step 6: Final answer
    x = 1,481,457.60

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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.