Home / 641,946.47-885,875.30-355,460.40

Finding the Fourth Proportional to 641,946.47, 885,875.30 and 355,460.40

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Solution

The fourth proportional to 641,946.47, 885,875.30 and 355,460.40 is: 490,529.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,946.47 : 885,875.30 = 355,460.40 : x
  2. Step 2: Convert to fraction form
    641,946.47/885,875.30 = 355,460.40/x
  3. Step 3: Cross multiply
    641,946.47x = 885,875.30 × 355,460.40
  4. Step 4: Simplify right side
    641,946.47x = 314,893,588,043.80
  5. Step 5: Solve for x
    x = 314,893,588,043.80/641,946.47
  6. Step 6: Final answer
    x = 490,529.36

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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.