Home / 739,792,420.19-1,020,905,412.28-400,692,459.37

Finding the Fourth Proportional to 739,792,420.19, 1,020,905,412.28 and 400,692,459.37

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Solution

The fourth proportional to 739,792,420.19, 1,020,905,412.28 and 400,692,459.37 is: 552,951,191.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,792,420.19 : 1,020,905,412.28 = 400,692,459.37 : x
  2. Step 2: Convert to fraction form
    739,792,420.19/1,020,905,412.28 = 400,692,459.37/x
  3. Step 3: Cross multiply
    739,792,420.19x = 1,020,905,412.28 × 400,692,459.37
  4. Step 4: Simplify right side
    739,792,420.19x = 409,069,100,430,617,024
  5. Step 5: Solve for x
    x = 409,069,100,430,617,024/739,792,420.19
  6. Step 6: Final answer
    x = 552,951,191.81

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1.5x scale

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.