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Finding the Fourth Proportional to 438,661.20, 657,991.80 and 367,802.40

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Solution

The fourth proportional to 438,661.20, 657,991.80 and 367,802.40 is: 551,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,661.20 : 657,991.80 = 367,802.40 : x
  2. Step 2: Convert to fraction form
    438,661.20/657,991.80 = 367,802.40/x
  3. Step 3: Cross multiply
    438,661.20x = 657,991.80 × 367,802.40
  4. Step 4: Simplify right side
    438,661.20x = 242,010,963,220.32
  5. Step 5: Solve for x
    x = 242,010,963,220.32/438,661.20
  6. Step 6: Final answer
    x = 551,703.60

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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.