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Finding the Fourth Proportional to 710,566.32, 980,574.12 and 400,440

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Solution

The fourth proportional to 710,566.32, 980,574.12 and 400,440 is: 552,603.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,566.32 : 980,574.12 = 400,440 : x
  2. Step 2: Convert to fraction form
    710,566.32/980,574.12 = 400,440/x
  3. Step 3: Cross multiply
    710,566.32x = 980,574.12 × 400,440
  4. Step 4: Simplify right side
    710,566.32x = 392,661,100,612.80
  5. Step 5: Solve for x
    x = 392,661,100,612.80/710,566.32
  6. Step 6: Final answer
    x = 552,603.03

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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.