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Finding the Fourth Proportional to 808,535.80, 1,213,802.10 and 509,015.80

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Solution

The fourth proportional to 808,535.80, 1,213,802.10 and 509,015.80 is: 764,152.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,535.80 : 1,213,802.10 = 509,015.80 : x
  2. Step 2: Convert to fraction form
    808,535.80/1,213,802.10 = 509,015.80/x
  3. Step 3: Cross multiply
    808,535.80x = 1,213,802.10 × 509,015.80
  4. Step 4: Simplify right side
    808,535.80x = 617,844,446,973.18
  5. Step 5: Solve for x
    x = 617,844,446,973.18/808,535.80
  6. Step 6: Final answer
    x = 764,152.25

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Double scale
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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.