Home / 520,499,283.37-780,720,186.72-380,583,121.01

Finding the Fourth Proportional to 520,499,283.37, 780,720,186.72 and 380,583,121.01

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Solution

The fourth proportional to 520,499,283.37, 780,720,186.72 and 380,583,121.01 is: 570,853,668.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,499,283.37 : 780,720,186.72 = 380,583,121.01 : x
  2. Step 2: Convert to fraction form
    520,499,283.37/780,720,186.72 = 380,583,121.01/x
  3. Step 3: Cross multiply
    520,499,283.37x = 780,720,186.72 × 380,583,121.01
  4. Step 4: Simplify right side
    520,499,283.37x = 297,128,925,291,601,024
  5. Step 5: Solve for x
    x = 297,128,925,291,601,024/520,499,283.37
  6. Step 6: Final answer
    x = 570,853,668.36

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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.