Home / 638,545,876.36-881,026,547.40-374,085,703.20

Finding the Fourth Proportional to 638,545,876.36, 881,026,547.40 and 374,085,703.20

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Solution

The fourth proportional to 638,545,876.36, 881,026,547.40 and 374,085,703.20 is: 516,140,574.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,545,876.36 : 881,026,547.40 = 374,085,703.20 : x
  2. Step 2: Convert to fraction form
    638,545,876.36/881,026,547.40 = 374,085,703.20/x
  3. Step 3: Cross multiply
    638,545,876.36x = 881,026,547.40 × 374,085,703.20
  4. Step 4: Simplify right side
    638,545,876.36x = 329,579,435,521,997,120
  5. Step 5: Solve for x
    x = 329,579,435,521,997,120/638,545,876.36
  6. Step 6: Final answer
    x = 516,140,574.58

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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.