Home / 1,315,414,210.80-1,973,561,820.12-430,140,395.64

Finding the Fourth Proportional to 1,315,414,210.80, 1,973,561,820.12 and 430,140,395.64

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Solution

The fourth proportional to 1,315,414,210.80, 1,973,561,820.12 and 430,140,395.64 is: 645,354,638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,414,210.80 : 1,973,561,820.12 = 430,140,395.64 : x
  2. Step 2: Convert to fraction form
    1,315,414,210.80/1,973,561,820.12 = 430,140,395.64/x
  3. Step 3: Cross multiply
    1,315,414,210.80x = 1,973,561,820.12 × 430,140,395.64
  4. Step 4: Simplify right side
    1,315,414,210.80x = 848,908,662,126,415,232
  5. Step 5: Solve for x
    x = 848,908,662,126,415,232/1,315,414,210.80
  6. Step 6: Final answer
    x = 645,354,638.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.