Home / 711,318.36-1,062,434.79-643,746.84

Finding the Fourth Proportional to 711,318.36, 1,062,434.79 and 643,746.84

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Solution

The fourth proportional to 711,318.36, 1,062,434.79 and 643,746.84 is: 961,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,318.36 : 1,062,434.79 = 643,746.84 : x
  2. Step 2: Convert to fraction form
    711,318.36/1,062,434.79 = 643,746.84/x
  3. Step 3: Cross multiply
    711,318.36x = 1,062,434.79 × 643,746.84
  4. Step 4: Simplify right side
    711,318.36x = 683,939,038,768.56
  5. Step 5: Solve for x
    x = 683,939,038,768.56/711,318.36
  6. Step 6: Final answer
    x = 961,509.05

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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.