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Finding the Fourth Proportional to 875,801.80, 1,314,285.90 and 402,243.40

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Solution

The fourth proportional to 875,801.80, 1,314,285.90 and 402,243.40 is: 603,632.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,801.80 : 1,314,285.90 = 402,243.40 : x
  2. Step 2: Convert to fraction form
    875,801.80/1,314,285.90 = 402,243.40/x
  3. Step 3: Cross multiply
    875,801.80x = 1,314,285.90 × 402,243.40
  4. Step 4: Simplify right side
    875,801.80x = 528,662,828,988.06
  5. Step 5: Solve for x
    x = 528,662,828,988.06/875,801.80
  6. Step 6: Final answer
    x = 603,632.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.