Home / 686,593,128.40-1,029,889,692.60-654,742,632.40

Finding the Fourth Proportional to 686,593,128.40, 1,029,889,692.60 and 654,742,632.40

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Solution

The fourth proportional to 686,593,128.40, 1,029,889,692.60 and 654,742,632.40 is: 982,113,948.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,593,128.40 : 1,029,889,692.60 = 654,742,632.40 : x
  2. Step 2: Convert to fraction form
    686,593,128.40/1,029,889,692.60 = 654,742,632.40/x
  3. Step 3: Cross multiply
    686,593,128.40x = 1,029,889,692.60 × 654,742,632.40
  4. Step 4: Simplify right side
    686,593,128.40x = 674,312,688,414,550,784
  5. Step 5: Solve for x
    x = 674,312,688,414,550,784/686,593,128.40
  6. Step 6: Final answer
    x = 982,113,948.60

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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.