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Finding the Fourth Proportional to 710,566.79, 980,570.31 and 388,269.47

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Solution

The fourth proportional to 710,566.79, 980,570.31 and 388,269.47 is: 535,805.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,566.79 : 980,570.31 = 388,269.47 : x
  2. Step 2: Convert to fraction form
    710,566.79/980,570.31 = 388,269.47/x
  3. Step 3: Cross multiply
    710,566.79x = 980,570.31 × 388,269.47
  4. Step 4: Simplify right side
    710,566.79x = 380,725,509,658.58
  5. Step 5: Solve for x
    x = 380,725,509,658.58/710,566.79
  6. Step 6: Final answer
    x = 535,805.38

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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.