Home / 642,533,670.36-886,370,133.63-419,645,820.28

Finding the Fourth Proportional to 642,533,670.36, 886,370,133.63 and 419,645,820.28

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Solution

The fourth proportional to 642,533,670.36, 886,370,133.63 and 419,645,820.28 is: 578,898,101.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,533,670.36 : 886,370,133.63 = 419,645,820.28 : x
  2. Step 2: Convert to fraction form
    642,533,670.36/886,370,133.63 = 419,645,820.28/x
  3. Step 3: Cross multiply
    642,533,670.36x = 886,370,133.63 × 419,645,820.28
  4. Step 4: Simplify right side
    642,533,670.36x = 371,961,521,798,854,528
  5. Step 5: Solve for x
    x = 371,961,521,798,854,528/642,533,670.36
  6. Step 6: Final answer
    x = 578,898,101.31

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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.