Home / 513,181,368.72-708,205,225.32-290,158,259.58

Finding the Fourth Proportional to 513,181,368.72, 708,205,225.32 and 290,158,259.58

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Solution

The fourth proportional to 513,181,368.72, 708,205,225.32 and 290,158,259.58 is: 400,426,843.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,181,368.72 : 708,205,225.32 = 290,158,259.58 : x
  2. Step 2: Convert to fraction form
    513,181,368.72/708,205,225.32 = 290,158,259.58/x
  3. Step 3: Cross multiply
    513,181,368.72x = 708,205,225.32 × 290,158,259.58
  4. Step 4: Simplify right side
    513,181,368.72x = 205,491,595,604,312,960
  5. Step 5: Solve for x
    x = 205,491,595,604,312,960/513,181,368.72
  6. Step 6: Final answer
    x = 400,426,843.47

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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.