Home / 912,906.98-1,369,485.08-380,303.46

Finding the Fourth Proportional to 912,906.98, 1,369,485.08 and 380,303.46

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Solution

The fourth proportional to 912,906.98, 1,369,485.08 and 380,303.46 is: 570,507.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,906.98 : 1,369,485.08 = 380,303.46 : x
  2. Step 2: Convert to fraction form
    912,906.98/1,369,485.08 = 380,303.46/x
  3. Step 3: Cross multiply
    912,906.98x = 1,369,485.08 × 380,303.46
  4. Step 4: Simplify right side
    912,906.98x = 520,819,914,342.38
  5. Step 5: Solve for x
    x = 520,819,914,342.38/912,906.98
  6. Step 6: Final answer
    x = 570,507.10

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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.