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Finding the Fourth Proportional to 723,254.58, 998,114.88 and 400,994.64

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Solution

The fourth proportional to 723,254.58, 998,114.88 and 400,994.64 is: 553,385.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,254.58 : 998,114.88 = 400,994.64 : x
  2. Step 2: Convert to fraction form
    723,254.58/998,114.88 = 400,994.64/x
  3. Step 3: Cross multiply
    723,254.58x = 998,114.88 × 400,994.64
  4. Step 4: Simplify right side
    723,254.58x = 400,238,716,984.24
  5. Step 5: Solve for x
    x = 400,238,716,984.24/723,254.58
  6. Step 6: Final answer
    x = 553,385.67

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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.