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Finding the Fourth Proportional to 611,455.46, 913,065.64 and 499,358.05

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Solution

The fourth proportional to 611,455.46, 913,065.64 and 499,358.05 is: 745,674.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,455.46 : 913,065.64 = 499,358.05 : x
  2. Step 2: Convert to fraction form
    611,455.46/913,065.64 = 499,358.05/x
  3. Step 3: Cross multiply
    611,455.46x = 913,065.64 × 499,358.05
  4. Step 4: Simplify right side
    611,455.46x = 455,946,673,981.34
  5. Step 5: Solve for x
    x = 455,946,673,981.34/611,455.46
  6. Step 6: Final answer
    x = 745,674.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.