Home / 922,127,884.86-1,272,532,676.45-498,742,018.86

Finding the Fourth Proportional to 922,127,884.86, 1,272,532,676.45 and 498,742,018.86

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Solution

The fourth proportional to 922,127,884.86, 1,272,532,676.45 and 498,742,018.86 is: 688,261,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,127,884.86 : 1,272,532,676.45 = 498,742,018.86 : x
  2. Step 2: Convert to fraction form
    922,127,884.86/1,272,532,676.45 = 498,742,018.86/x
  3. Step 3: Cross multiply
    922,127,884.86x = 1,272,532,676.45 × 498,742,018.86
  4. Step 4: Simplify right side
    922,127,884.86x = 634,665,516,115,498,496
  5. Step 5: Solve for x
    x = 634,665,516,115,498,496/922,127,884.86
  6. Step 6: Final answer
    x = 688,261,928.24

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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.