Home / 513,242,575.83-708,288,681.48-290,257,602.42

Finding the Fourth Proportional to 513,242,575.83, 708,288,681.48 and 290,257,602.42

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Solution

The fourth proportional to 513,242,575.83, 708,288,681.48 and 290,257,602.42 is: 400,563,367.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,242,575.83 : 708,288,681.48 = 290,257,602.42 : x
  2. Step 2: Convert to fraction form
    513,242,575.83/708,288,681.48 = 290,257,602.42/x
  3. Step 3: Cross multiply
    513,242,575.83x = 708,288,681.48 × 290,257,602.42
  4. Step 4: Simplify right side
    513,242,575.83x = 205,586,174,507,607,872
  5. Step 5: Solve for x
    x = 205,586,174,507,607,872/513,242,575.83
  6. Step 6: Final answer
    x = 400,563,367.48

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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.