Home / 786,985.04-1,085,929.80-447,415.76

Finding the Fourth Proportional to 786,985.04, 1,085,929.80 and 447,415.76

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Solution

The fourth proportional to 786,985.04, 1,085,929.80 and 447,415.76 is: 617,371.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,985.04 : 1,085,929.80 = 447,415.76 : x
  2. Step 2: Convert to fraction form
    786,985.04/1,085,929.80 = 447,415.76/x
  3. Step 3: Cross multiply
    786,985.04x = 1,085,929.80 × 447,415.76
  4. Step 4: Simplify right side
    786,985.04x = 485,862,106,773.65
  5. Step 5: Solve for x
    x = 485,862,106,773.65/786,985.04
  6. Step 6: Final answer
    x = 617,371.46

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1.5x scale

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.