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Finding the Fourth Proportional to 709,323.09, 979,011.54 and 433,728.06

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Solution

The fourth proportional to 709,323.09, 979,011.54 and 433,728.06 is: 598,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,323.09 : 979,011.54 = 433,728.06 : x
  2. Step 2: Convert to fraction form
    709,323.09/979,011.54 = 433,728.06/x
  3. Step 3: Cross multiply
    709,323.09x = 979,011.54 × 433,728.06
  4. Step 4: Simplify right side
    709,323.09x = 424,624,775,961.81
  5. Step 5: Solve for x
    x = 424,624,775,961.81/709,323.09
  6. Step 6: Final answer
    x = 598,633.80

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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.