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Finding the Fourth Proportional to 553,703.20, 828,805.20 and 434,730.40

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Solution

The fourth proportional to 553,703.20, 828,805.20 and 434,730.40 is: 650,721.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,703.20 : 828,805.20 = 434,730.40 : x
  2. Step 2: Convert to fraction form
    553,703.20/828,805.20 = 434,730.40/x
  3. Step 3: Cross multiply
    553,703.20x = 828,805.20 × 434,730.40
  4. Step 4: Simplify right side
    553,703.20x = 360,306,816,118.08
  5. Step 5: Solve for x
    x = 360,306,816,118.08/553,703.20
  6. Step 6: Final answer
    x = 650,721.93

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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.