Home / 1,913,925,952.40-2,870,888,928.60-686,934,971.60

Finding the Fourth Proportional to 1,913,925,952.40, 2,870,888,928.60 and 686,934,971.60

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Solution

The fourth proportional to 1,913,925,952.40, 2,870,888,928.60 and 686,934,971.60 is: 1,030,402,457.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,925,952.40 : 2,870,888,928.60 = 686,934,971.60 : x
  2. Step 2: Convert to fraction form
    1,913,925,952.40/2,870,888,928.60 = 686,934,971.60/x
  3. Step 3: Cross multiply
    1,913,925,952.40x = 2,870,888,928.60 × 686,934,971.60
  4. Step 4: Simplify right side
    1,913,925,952.40x = 1,972,114,004,634,595,328
  5. Step 5: Solve for x
    x = 1,972,114,004,634,595,328/1,913,925,952.40
  6. Step 6: Final answer
    x = 1,030,402,457.40

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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.