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Finding the Fourth Proportional to 450,289.84, 621,053.76 and 314,280.40

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Solution

The fourth proportional to 450,289.84, 621,053.76 and 314,280.40 is: 433,465.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,289.84 : 621,053.76 = 314,280.40 : x
  2. Step 2: Convert to fraction form
    450,289.84/621,053.76 = 314,280.40/x
  3. Step 3: Cross multiply
    450,289.84x = 621,053.76 × 314,280.40
  4. Step 4: Simplify right side
    450,289.84x = 195,185,024,114.30
  5. Step 5: Solve for x
    x = 195,185,024,114.30/450,289.84
  6. Step 6: Final answer
    x = 433,465.31

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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.