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Finding the Fourth Proportional to 554,501.70, 831,752.55 and 440,340.30

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Solution

The fourth proportional to 554,501.70, 831,752.55 and 440,340.30 is: 660,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,501.70 : 831,752.55 = 440,340.30 : x
  2. Step 2: Convert to fraction form
    554,501.70/831,752.55 = 440,340.30/x
  3. Step 3: Cross multiply
    554,501.70x = 831,752.55 × 440,340.30
  4. Step 4: Simplify right side
    554,501.70x = 366,254,167,392.77
  5. Step 5: Solve for x
    x = 366,254,167,392.77/554,501.70
  6. Step 6: Final answer
    x = 660,510.45

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Half scale
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Double scale
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Similar ratio
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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.