Home / 517,428,762.37-776,143,143.55-415,392,090.37

Finding the Fourth Proportional to 517,428,762.37, 776,143,143.55 and 415,392,090.37

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Solution

The fourth proportional to 517,428,762.37, 776,143,143.55 and 415,392,090.37 is: 623,088,135.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,428,762.37 : 776,143,143.55 = 415,392,090.37 : x
  2. Step 2: Convert to fraction form
    517,428,762.37/776,143,143.55 = 415,392,090.37/x
  3. Step 3: Cross multiply
    517,428,762.37x = 776,143,143.55 × 415,392,090.37
  4. Step 4: Simplify right side
    517,428,762.37x = 322,403,722,821,696,768
  5. Step 5: Solve for x
    x = 322,403,722,821,696,768/517,428,762.37
  6. Step 6: Final answer
    x = 623,088,135.55

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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.