Home / 1,913,925,943.90-2,870,888,915.85-686,934,963.10

Finding the Fourth Proportional to 1,913,925,943.90, 2,870,888,915.85 and 686,934,963.10

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Solution

The fourth proportional to 1,913,925,943.90, 2,870,888,915.85 and 686,934,963.10 is: 1,030,402,444.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,925,943.90 : 2,870,888,915.85 = 686,934,963.10 : x
  2. Step 2: Convert to fraction form
    1,913,925,943.90/2,870,888,915.85 = 686,934,963.10/x
  3. Step 3: Cross multiply
    1,913,925,943.90x = 2,870,888,915.85 × 686,934,963.10
  4. Step 4: Simplify right side
    1,913,925,943.90x = 1,972,113,971,473,618,688
  5. Step 5: Solve for x
    x = 1,972,113,971,473,618,688/1,913,925,943.90
  6. Step 6: Final answer
    x = 1,030,402,444.65

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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.