Finding the Fourth Proportional to 390,891,465.12, 586,336,863.60 and 99,758,565.12
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Solution
The fourth proportional to 390,891,465.12, 586,336,863.60 and 99,758,565.12 is: 149,637,762.42
Step by Step Solution
- Step 1: Write the proportion equation
390,891,465.12 : 586,336,863.60 = 99,758,565.12 : x - Step 2: Convert to fraction form
390,891,465.12/586,336,863.60 = 99,758,565.12/x - Step 3: Cross multiply
390,891,465.12x = 586,336,863.60 × 99,758,565.12 - Step 4: Simplify right side
390,891,465.12x = 58,492,124,189,697,160 - Step 5: Solve for x
x = 58,492,124,189,697,160/390,891,465.12 - Step 6: Final answer
x = 149,637,762.42
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.