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Finding the Fourth Proportional to 879,710.40, 1,214,006.40 and 477,302.40

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Solution

The fourth proportional to 879,710.40, 1,214,006.40 and 477,302.40 is: 658,680.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,710.40 : 1,214,006.40 = 477,302.40 : x
  2. Step 2: Convert to fraction form
    879,710.40/1,214,006.40 = 477,302.40/x
  3. Step 3: Cross multiply
    879,710.40x = 1,214,006.40 × 477,302.40
  4. Step 4: Simplify right side
    879,710.40x = 579,448,168,335.36
  5. Step 5: Solve for x
    x = 579,448,168,335.36/879,710.40
  6. Step 6: Final answer
    x = 658,680.59

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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.