Home / 739,792,420.31-1,020,905,412.46-400,692,459.50

Finding the Fourth Proportional to 739,792,420.31, 1,020,905,412.46 and 400,692,459.50

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Solution

The fourth proportional to 739,792,420.31, 1,020,905,412.46 and 400,692,459.50 is: 552,951,191.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,792,420.31 : 1,020,905,412.46 = 400,692,459.50 : x
  2. Step 2: Convert to fraction form
    739,792,420.31/1,020,905,412.46 = 400,692,459.50/x
  3. Step 3: Cross multiply
    739,792,420.31x = 1,020,905,412.46 × 400,692,459.50
  4. Step 4: Simplify right side
    739,792,420.31x = 409,069,100,628,351,360
  5. Step 5: Solve for x
    x = 409,069,100,628,351,360/739,792,420.31
  6. Step 6: Final answer
    x = 552,951,191.98

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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.