Home / 787,688.12-1,087,034.64-448,178.24

Finding the Fourth Proportional to 787,688.12, 1,087,034.64 and 448,178.24

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Solution

The fourth proportional to 787,688.12, 1,087,034.64 and 448,178.24 is: 618,500.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,688.12 : 1,087,034.64 = 448,178.24 : x
  2. Step 2: Convert to fraction form
    787,688.12/1,087,034.64 = 448,178.24/x
  3. Step 3: Cross multiply
    787,688.12x = 1,087,034.64 × 448,178.24
  4. Step 4: Simplify right side
    787,688.12x = 487,185,271,774.23
  5. Step 5: Solve for x
    x = 487,185,271,774.23/787,688.12
  6. Step 6: Final answer
    x = 618,500.22

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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.