Home / 785,711.16-1,084,281.58-428,015.16

Finding the Fourth Proportional to 785,711.16, 1,084,281.58 and 428,015.16

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Solution

The fourth proportional to 785,711.16, 1,084,281.58 and 428,015.16 is: 590,661.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,711.16 : 1,084,281.58 = 428,015.16 : x
  2. Step 2: Convert to fraction form
    785,711.16/1,084,281.58 = 428,015.16/x
  3. Step 3: Cross multiply
    785,711.16x = 1,084,281.58 × 428,015.16
  4. Step 4: Simplify right side
    785,711.16x = 464,088,953,948.75
  5. Step 5: Solve for x
    x = 464,088,953,948.75/785,711.16
  6. Step 6: Final answer
    x = 590,661.02

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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.