Home / 910,700,911.57-1,256,767,678.45-493,013,196.87

Finding the Fourth Proportional to 910,700,911.57, 1,256,767,678.45 and 493,013,196.87

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Solution

The fourth proportional to 910,700,911.57, 1,256,767,678.45 and 493,013,196.87 is: 680,358,439.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,700,911.57 : 1,256,767,678.45 = 493,013,196.87 : x
  2. Step 2: Convert to fraction form
    910,700,911.57/1,256,767,678.45 = 493,013,196.87/x
  3. Step 3: Cross multiply
    910,700,911.57x = 1,256,767,678.45 × 493,013,196.87
  4. Step 4: Simplify right side
    910,700,911.57x = 619,603,050,875,522,688
  5. Step 5: Solve for x
    x = 619,603,050,875,522,688/910,700,911.57
  6. Step 6: Final answer
    x = 680,358,439.31

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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.